Albeet f



(No Model.)

- A. F. UONGDON.

- ELECTRIC GENERATOR AND MOTOR. No. 374,778. Patented Dec. 13, 1887.

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' UNITED STATES PATENT OFFICE- ALBERT F. CONGDON, OFPHILADELPHIA,"PENNSYLVANIA, ASSIGNOR OF TWO-THIBDS TO ISAAC SOHLIOTERAND GEORGE E. VIOKERS, BOTHOF SAME PLACE.

ELECTRIC GENERATOR AND MOTOR.

SPECIFICATION forming part of Letters Patent No. 374,778, dated December13, 1887.

Application filed March 26, 1887. Serial No. 232,544.

1c and electric motors, designed with the view,

mainly, of increasing the efficiency of the machine and of facilitatingrepairs to the armature in case of accident.

In the accompanying drawings, Figure 1 is' I vertical section of adynamo-electric machine embodying myimprovements. Fig. 2 is a verticalsection at right angles to that shown in Fig. 1; and Fig. 3 illustratesin perspective View the armature shaft and sleeve on which the armatureis to be mounted.

E and E are the field-magnets, the cores 6 of which are bolted at theirouter ends to the usual iron frame, F.

In electric generators or motors as heretofore constructed it has beenusual to carefully finish the contact surfaces of the ends of the coresand the frame, so that when bolted together a good metallic contact willbe obtained. In order to get a good metallic contact with- 0 out thenecessity of finishing the parts, I form in the outer end of each coreone or more grooves or recesses, and on the frame correspondingprojectionsf, as shown more fully in Fig. 2. By this means I get anincreased ex- 3 5 tent of contact-surface between the frame and the endsof the cores of the field-magnets,and

do not need to finish the projections or grooves.

The extension of parts of the frame (namely,

the projectionsf) to points within the convo- 0 lutions of some of thefield-magnet coils is also an advantage I find. Between the poles of thefield-magnets rotates the armature A, which is of the drum-wound style.

The bodyof the armature consists of a num- 4 5 ber of sheet-metal platesor disks, spaced, if

desired, as hereinafter described, and mounted on a shaft, S, whichturns in suitable bearings,

D D, secured to the pole-piecesor frame of the v machine.Overthesedisksare wound the usual (No model.)

wires in any desired way. In order that the shaft of this armature maybe removed readily, in case of breakage or other accident, and withoutdisturbing the body of the armature or wires wound thereon, I constructthe armature and mount it on the shaft in the following manner: Thesheet-metal disks a, forming the body of the armature, are mounted on asleeve, B, Fig. 3, and are spaced apart by blocks a of paper or othersuitable insulating material, the end disks of the series beingpreferably castings with flanges e, as shown in Fig. 1. On one end ofthe sleeve B is a nut or collar, 1), and on the other end is to bescrewed a nut, b, so as to clamp the disks forming the body of thearmature on the sleeve. The above with its nuts thus is the sole meansof holding the disks together, and the use of additional bolts isdispensed with. Vithin the annular flange of each end piece is fittedthe tube G, (G,) and on the longer of these tubes is mounted anysuitable form of com mutator 0. Over the armature thus constructed canthen be Wound the wires,with their terminals connected to the segmentsof the 60111- mutator, the winding holding the tubes G G in place.Through the sleeve Bean be inserted the shaft S, and in order that thearmature above described can rotate with the shaft a' key, 8, on thelatter fits into a longitudinal slot, 8', Fig. 3, in the sleeve B, andpreferably into corresponding notches in the metal disks of thearmature. Theslot s in the sleeve B does not extend quite to the end onwhich the retaining-nut b is screwed. In order to retain the shaft inplace a distance piece or sleeve, T, is slipped over one end through thetube G, and the shaft is drawn up until the end of the key 3 reaches theend of the groove 3 in the sleeve B. The sleeve T is then secured to theshaft by a suitable set-screw, t, and after the shaft of the armaturehas been adjusted to its bearings the belt-pulley is seeured'to theshaft. In case of breakage or injury to the shaft, all that is necessaryto take the shaft out without disturbing the body or winding of thearma- 5 ture is to remove the belt-pulley, free the distance-piece Tfrom the shaft, remove the bearing D, and pull the shaft out, as will bereadily understood on reference to the drawings.

Openings p are formed in the spaced disks to for the free circulation ofair through them and the coils, this circulation being facilitated bythe open tubes G G at the opposite ends.

I claim as my invention- 1. The electric generator or motor havingrecesses in the ends of its field-magnet cores, in combination withprojections on the frame adapted to said recesses and extending topoints within the field-magnet coils, substantially as set forth.

2. The combination of the disks and winding of a drum-wound armature anda sleeve on which the said disks and drum-winding are mounted, and whichis the sole means of clamping the disks, with ashaft keyed to saidsleeve and removable therefrom without disturbing the winding, allsubstantially as set forth.

3. The combination of the disks and winding of an armature, tubes at theends over which the winding passes, and a commutator mounted on one ofthe tubes, with a removable shaft passing through said tubes, allsubstantially as specified.

4:. The combination of the disks and winding of an armature, and asleeve 011 which they are mounted, with tubes at the opposite ends, overwhich the winding passes, a keyed shaft passing through the said sleeve,and a diso tance-piece, T, all substantially as specified. In testimonywhereof I have signed my name to this specification in the presence oftwo subscribing witnesses.

ALBERT F. CONGDON. Witnesses:

WILLIAM D. CONN-ER, HARRY SMITH.

